SU1257858A1 - Portable x-ray generator - Google Patents

Abstract

In a portable X-ray generator with a cascade voltage multiplier, the capacitors of the equalizing column are made up of conductive glasses enveloping each other and introduced into the body insulation of the generator. This will reduce the number of structural elements of the generator, reduce its size, weight and increase reliability. 2 nl. C71 00 sd 00

Description

The invention relates to X-ray technology, more specifically to a portable X-ray generator with cascade voltage multipliers.

The purpose of the invention is to increase reliability, reduce size and weight by reducing the number of structural elements.

Figure 1 shows an electrical diagram of a portable X-ray generator, figure 2 shows its constructive implementation.

The portable X-ray generator contains a high-voltage transformer 1, a thermionic x-ray tube 3 and a cascade voltage multiplier 2. The cascade voltage multiplier 2 consists of a capacitor boost column 4-7, a capacitor equalization column 8-11, and a diode 12-19. A limiting resistor 20 is included in the anode circuit of the x-ray tube 3. The listed units are placed in a sealed case 21, from which they are separated by case insulation 22, filled in the form of dielectric layers 23, between which are placed each other covering glasses 24 of electrically conductive material. Glasses 24 through the contact spring 25 is electrically connected. with potential points a, s, & (FIG.) cascade voltage multiplier 2. The cups 24 perform the functions of the plates of the capacitors 8-1 1 of the equalization column.

The following portable x-ray generator operates as follows.

The alternating voltage applied to the high voltage transformer 1 is converted into a high alternating voltage (8 kV), which is multiplied by a cascade voltage multiplier 2. The resulting equalized constant high voltage is applied to the anode of the x-ray tube 3. made in a modular version, each module contains one capacitor instead of the usual two, two diodes and a limiting resistor (not shown).

The role of the capacitors 8-11 of the equalization column is performed by the layers 23 of the cabinet insulation 22 with electrically conducting glasses 24. Each layer 23 is made of a set of polyester films 5-8 µm thick, and the number of films is determined by the voltage on the cascade (for one kilovolt - one Dacron leaf). The electrically conducting glasses 24 are made of aluminum.

foil thickness of 20 microns. The 64 kV voltage multiplier contains 64 sheets of lavsan film, separated by cups 24 of aluminum foil. The entire structure, consisting of a high-voltage transformer 1, a thermionic x-ray tube 3, a cascade voltage multiplier 2 and a case insulation 22, is housed in a sealed duralumin cylindrical case

21 with a wall thickness of 1-1.5 mm and filled with condenser oil.

Claims (1)

Invention Formula A portable X-ray generator containing a series-connected high-voltage transformer, a cascade voltage multiplier with capacitor strings and a leveling column, a limiting resistor, and a thermionic X-ray tube installed in a sealed enclosure and separated from its walls by body insulation, with a cascade voltage multiplier located around the X-ray tube That is, in order to increase reliability, reduce overall dimensions and weight by reducing the number of structural elements, leveling capacitors are formed by electrically conductive cups inserted into the body insulation and enclosing each other. Editor L. Pchelinska Compiled by K. Kononov Tehred I. Veres Proofreader M. Maxmm1dipets Order 50/41/58 Circulation 765 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Paymci and nab. d. 4/5 Production and printing company, Uzhgorod, Projecto st., 4 (fJue.Z 18 fff